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I want to upgrade to Adobe CS for next year, but I have some questions. I was hoping one of the STN members has a lab with Adobe CS and can shed some light.

Did you purchase a license for each student? Did you purchase a license for each computer? I could have school or google email accounts issued for my 15 machines and use the emails as my Adobe CS login. Students could then login with these accounts from home or other computers on campus. Essentially sharing the account never at the same time. Would this violate the license agreement? Is any school doing this?

If you have CS how is it working in the classroom setting? Are you using the cloud
storage space or just keeping files on the local hardrives?

Our school purchased a site license of Adobe CS6 master suite, and we have it on all machines from 9th grade through 12th grade.

I think the entire site license was about $30,000. It was purchased by the board of education as we are now certifying students on the Adobe and Microsoft products as they leave the school.
Hope this helps. Let me know if I can assist on any way.